1999/11/01 by N. V. Sarlis, M. Lazaridou, P. Kapiris +1 · 5 citations
Earth and Planetary Sciences · Mathematics · Chemistry · #Earthquake Detection and Analysis #Geophysical and Geoelectrical Methods #Seismic Waves and Analysis #Electric field #Physics #Field (mathematics) #Selectivity #Magnetic field #Numerical analysis #Geophysics #Mathematics #Mathematical analysis #Chemistry #Quantum mechanics
paper · pdf · doi:10.1029/1998gl005265
openalex publication_date 1999/11/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/26
Numerical solutions of Maxwell equations for a model earth with a reasonably conducting channel indicate that the electric field values are intensified within a certain region only (i.e., above the end of the channel), thus explaining the observed selectivity effect. In this region, the electric field may reach detectable values (5–10mV/km), while the magnetic field still remains low (10 −2 nT). The results are compatible with those obtained recently by analytical solutions ( Varotsos et al. [1998]). Both the numerical and the analytical solutions lead to a natural explanation of the ΔV/L≈const criterion. This criterion, however, should not be applied over an area with strongly inhomogeneous electrical structure.